Would it have really been so bad to open up the scooter when she asked? What was your reason for not wanting to open it up, other than she hasn't touched it in months?

I TOTALLY agree with picking your battles but personally don't think it should matter why she wouldn't open the scooter. She said no. Op, I think your dd's consequence for calling you lazy was VERY appropriate.

I don't have much advice for how to deal with your daughters attitude, I haven't reached that point yet in our parenting journey. I do think that choosing your battles and saying yes unless there is a reason to say no will help. Do you spend much time with your dd on your own? Does she feel like you have an interest in her and what she likes? I think at that age she is discovering herself and maybe wants validation which can lead to acting out I'd she isn't getting it.